rtc: generic: allow building on all architectures
There are four architectures using this driver, but since we can build it with COMPILE_TEST, we should try dealing with the absence of the asm/rtc.h header file, to avoid getting a build error: drivers/rtc/rtc-generic.c:12:21: fatal error: asm/rtc.h: No such file or directory This creates an alternative use of the driver, allowing architectures to pass a set of rtc_class_ops in platform data. We can convert the four architectures to use this and then remove the original code. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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1 changed files with 11 additions and 1 deletions
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@ -9,6 +9,8 @@
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#include <linux/platform_device.h>
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#include <linux/rtc.h>
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#if defined(CONFIG_M68K) || defined(CONFIG_PARISC) || \
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defined(CONFIG_PPC) || defined(CONFIG_SUPERH32)
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#include <asm/rtc.h>
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static int generic_get_time(struct device *dev, struct rtc_time *tm)
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@ -33,13 +35,21 @@ static const struct rtc_class_ops generic_rtc_ops = {
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.read_time = generic_get_time,
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.set_time = generic_set_time,
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};
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#else
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#define generic_rtc_ops *(struct rtc_class_ops*)NULL
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#endif
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static int __init generic_rtc_probe(struct platform_device *dev)
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{
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struct rtc_device *rtc;
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const struct rtc_class_ops *ops;
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ops = dev_get_platdata(&dev->dev);
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if (!ops)
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ops = &generic_rtc_ops;
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rtc = devm_rtc_device_register(&dev->dev, "rtc-generic",
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&generic_rtc_ops, THIS_MODULE);
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ops, THIS_MODULE);
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if (IS_ERR(rtc))
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return PTR_ERR(rtc);
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